/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/queue_ok_longer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 06:12:48,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 06:12:48,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 06:12:48,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 06:12:48,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 06:12:48,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 06:12:48,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 06:12:48,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 06:12:48,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 06:12:48,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 06:12:48,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 06:12:48,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 06:12:48,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 06:12:48,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 06:12:48,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 06:12:48,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 06:12:48,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 06:12:48,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 06:12:48,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 06:12:48,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 06:12:48,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 06:12:48,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 06:12:48,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 06:12:48,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 06:12:48,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 06:12:48,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 06:12:48,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 06:12:48,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 06:12:48,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 06:12:48,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 06:12:48,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 06:12:48,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 06:12:48,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 06:12:48,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 06:12:48,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 06:12:48,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 06:12:48,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 06:12:48,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 06:12:48,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 06:12:48,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 06:12:48,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 06:12:48,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 06:12:48,778 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 06:12:48,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 06:12:48,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 06:12:48,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 06:12:48,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 06:12:48,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 06:12:48,780 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 06:12:48,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 06:12:48,780 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 06:12:48,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 06:12:48,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 06:12:48,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 06:12:48,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 06:12:48,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 06:12:48,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 06:12:48,781 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 06:12:48,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 06:12:48,781 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 06:12:48,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 06:12:48,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 06:12:48,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 06:12:48,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 06:12:48,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 06:12:48,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:12:48,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 06:12:48,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 06:12:48,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 06:12:48,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 06:12:48,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 06:12:48,782 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 06:12:48,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 06:12:48,783 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 06:12:48,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 06:12:48,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 06:12:48,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 06:12:48,969 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 06:12:48,970 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 06:12:48,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok_longer.i [2023-01-28 06:12:49,906 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 06:12:50,078 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 06:12:50,078 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i [2023-01-28 06:12:50,094 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f5741fac/686122630bc04f09bffc7ae7b91c15cb/FLAGb2c4cb2ce [2023-01-28 06:12:50,106 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f5741fac/686122630bc04f09bffc7ae7b91c15cb [2023-01-28 06:12:50,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 06:12:50,109 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 06:12:50,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 06:12:50,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 06:12:50,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 06:12:50,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:12:50" (1/1) ... [2023-01-28 06:12:50,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2efa75a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:50, skipping insertion in model container [2023-01-28 06:12:50,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:12:50" (1/1) ... [2023-01-28 06:12:50,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 06:12:50,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 06:12:50,467 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i[43272,43285] [2023-01-28 06:12:50,472 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i[43545,43558] [2023-01-28 06:12:50,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:12:50,485 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 06:12:50,564 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i[43272,43285] [2023-01-28 06:12:50,566 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i[43545,43558] [2023-01-28 06:12:50,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:12:50,610 INFO L208 MainTranslator]: Completed translation [2023-01-28 06:12:50,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:50 WrapperNode [2023-01-28 06:12:50,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 06:12:50,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 06:12:50,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 06:12:50,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 06:12:50,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:50" (1/1) ... [2023-01-28 06:12:50,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:50" (1/1) ... [2023-01-28 06:12:50,673 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 203 [2023-01-28 06:12:50,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 06:12:50,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 06:12:50,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 06:12:50,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 06:12:50,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:50" (1/1) ... [2023-01-28 06:12:50,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:50" (1/1) ... [2023-01-28 06:12:50,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:50" (1/1) ... [2023-01-28 06:12:50,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:50" (1/1) ... [2023-01-28 06:12:50,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:50" (1/1) ... [2023-01-28 06:12:50,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:50" (1/1) ... [2023-01-28 06:12:50,700 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:50" (1/1) ... [2023-01-28 06:12:50,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:50" (1/1) ... [2023-01-28 06:12:50,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 06:12:50,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 06:12:50,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 06:12:50,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 06:12:50,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:50" (1/1) ... [2023-01-28 06:12:50,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:12:50,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:12:50,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 06:12:50,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 06:12:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-28 06:12:50,844 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-28 06:12:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-28 06:12:50,844 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-28 06:12:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 06:12:50,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 06:12:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 06:12:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 06:12:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 06:12:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 06:12:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 06:12:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 06:12:50,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 06:12:50,847 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 06:12:51,028 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 06:12:51,030 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 06:12:51,274 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 06:12:51,281 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 06:12:51,281 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 06:12:51,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:12:51 BoogieIcfgContainer [2023-01-28 06:12:51,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 06:12:51,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 06:12:51,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 06:12:51,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 06:12:51,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 06:12:50" (1/3) ... [2023-01-28 06:12:51,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b6605b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:12:51, skipping insertion in model container [2023-01-28 06:12:51,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:12:50" (2/3) ... [2023-01-28 06:12:51,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b6605b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:12:51, skipping insertion in model container [2023-01-28 06:12:51,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:12:51" (3/3) ... [2023-01-28 06:12:51,287 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2023-01-28 06:12:51,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 06:12:51,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 06:12:51,298 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 06:12:51,374 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 06:12:51,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 216 transitions, 448 flow [2023-01-28 06:12:51,464 INFO L130 PetriNetUnfolder]: 13/214 cut-off events. [2023-01-28 06:12:51,464 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 06:12:51,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 214 events. 13/214 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 359 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 141. Up to 3 conditions per place. [2023-01-28 06:12:51,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 216 transitions, 448 flow [2023-01-28 06:12:51,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 205 transitions, 419 flow [2023-01-28 06:12:51,491 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 06:12:51,502 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 205 transitions, 419 flow [2023-01-28 06:12:51,504 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 205 transitions, 419 flow [2023-01-28 06:12:51,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 205 transitions, 419 flow [2023-01-28 06:12:51,536 INFO L130 PetriNetUnfolder]: 13/205 cut-off events. [2023-01-28 06:12:51,537 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 06:12:51,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 205 events. 13/205 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 293 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 141. Up to 3 conditions per place. [2023-01-28 06:12:51,542 INFO L119 LiptonReduction]: Number of co-enabled transitions 9984 [2023-01-28 06:12:57,597 INFO L134 LiptonReduction]: Checked pairs total: 19772 [2023-01-28 06:12:57,598 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-01-28 06:12:57,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 06:12:57,612 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@67b96d29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 06:12:57,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 06:12:57,613 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-01-28 06:12:57,613 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:12:57,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:12:57,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-01-28 06:12:57,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:12:57,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:12:57,617 INFO L85 PathProgramCache]: Analyzing trace with hash 839, now seen corresponding path program 1 times [2023-01-28 06:12:57,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:12:57,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776654596] [2023-01-28 06:12:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:12:57,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:12:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:12:57,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:57,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:12:57,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776654596] [2023-01-28 06:12:57,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776654596] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:12:57,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:12:57,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-01-28 06:12:57,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388265674] [2023-01-28 06:12:57,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:12:57,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 06:12:57,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:12:57,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 06:12:57,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 06:12:57,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 402 [2023-01-28 06:12:57,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 103 flow. Second operand has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:57,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:12:57,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 402 [2023-01-28 06:12:57,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:12:57,887 INFO L130 PetriNetUnfolder]: 829/1341 cut-off events. [2023-01-28 06:12:57,888 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-01-28 06:12:57,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2685 conditions, 1341 events. 829/1341 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5736 event pairs, 621 based on Foata normal form. 0/1143 useless extension candidates. Maximal degree in co-relation 2519. Up to 1297 conditions per place. [2023-01-28 06:12:57,895 INFO L137 encePairwiseOnDemand]: 401/402 looper letters, 38 selfloop transitions, 0 changer transitions 1/46 dead transitions. [2023-01-28 06:12:57,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 179 flow [2023-01-28 06:12:57,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 06:12:57,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 06:12:57,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 450 transitions. [2023-01-28 06:12:57,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597014925373134 [2023-01-28 06:12:57,906 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 450 transitions. [2023-01-28 06:12:57,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 450 transitions. [2023-01-28 06:12:57,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:12:57,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 450 transitions. [2023-01-28 06:12:57,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 225.0) internal successors, (450), 2 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:57,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:57,916 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:57,918 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 103 flow. Second operand 2 states and 450 transitions. [2023-01-28 06:12:57,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 179 flow [2023-01-28 06:12:57,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 06:12:57,921 INFO L231 Difference]: Finished difference. Result has 44 places, 45 transitions, 94 flow [2023-01-28 06:12:57,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=44, PETRI_TRANSITIONS=45} [2023-01-28 06:12:57,925 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-01-28 06:12:57,925 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 45 transitions, 94 flow [2023-01-28 06:12:57,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:57,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:12:57,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:12:57,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 06:12:57,926 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:12:57,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:12:57,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1319934340, now seen corresponding path program 1 times [2023-01-28 06:12:57,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:12:57,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867192656] [2023-01-28 06:12:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:12:57,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:12:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:12:58,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:58,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:12:58,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867192656] [2023-01-28 06:12:58,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867192656] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:12:58,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:12:58,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 06:12:58,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320737843] [2023-01-28 06:12:58,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:12:58,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:12:58,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:12:58,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:12:58,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:12:58,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 402 [2023-01-28 06:12:58,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 45 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:12:58,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 402 [2023-01-28 06:12:58,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:12:58,273 INFO L130 PetriNetUnfolder]: 248/490 cut-off events. [2023-01-28 06:12:58,273 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-28 06:12:58,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 490 events. 248/490 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2048 event pairs, 164 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 980. Up to 253 conditions per place. [2023-01-28 06:12:58,275 INFO L137 encePairwiseOnDemand]: 398/402 looper letters, 40 selfloop transitions, 2 changer transitions 8/53 dead transitions. [2023-01-28 06:12:58,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 209 flow [2023-01-28 06:12:58,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:12:58,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:12:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-01-28 06:12:58,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356550580431177 [2023-01-28 06:12:58,280 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-01-28 06:12:58,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-01-28 06:12:58,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:12:58,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-01-28 06:12:58,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,285 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,285 INFO L175 Difference]: Start difference. First operand has 44 places, 45 transitions, 94 flow. Second operand 3 states and 646 transitions. [2023-01-28 06:12:58,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 209 flow [2023-01-28 06:12:58,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 06:12:58,286 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 94 flow [2023-01-28 06:12:58,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-01-28 06:12:58,287 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-01-28 06:12:58,288 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 94 flow [2023-01-28 06:12:58,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:12:58,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:12:58,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 06:12:58,289 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:12:58,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:12:58,291 INFO L85 PathProgramCache]: Analyzing trace with hash -312369892, now seen corresponding path program 1 times [2023-01-28 06:12:58,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:12:58,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281100209] [2023-01-28 06:12:58,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:12:58,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:12:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:12:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:58,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:12:58,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281100209] [2023-01-28 06:12:58,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281100209] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:12:58,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:12:58,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:12:58,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131075888] [2023-01-28 06:12:58,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:12:58,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:12:58,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:12:58,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:12:58,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:12:58,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-28 06:12:58,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:12:58,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-28 06:12:58,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:12:58,471 INFO L130 PetriNetUnfolder]: 245/490 cut-off events. [2023-01-28 06:12:58,472 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-01-28 06:12:58,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 490 events. 245/490 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1755 event pairs, 155 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 1020. Up to 357 conditions per place. [2023-01-28 06:12:58,476 INFO L137 encePairwiseOnDemand]: 398/402 looper letters, 48 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-01-28 06:12:58,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 226 flow [2023-01-28 06:12:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:12:58,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:12:58,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-01-28 06:12:58,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356550580431177 [2023-01-28 06:12:58,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-01-28 06:12:58,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-01-28 06:12:58,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:12:58,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-01-28 06:12:58,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,481 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 94 flow. Second operand 3 states and 646 transitions. [2023-01-28 06:12:58,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 226 flow [2023-01-28 06:12:58,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:12:58,483 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 109 flow [2023-01-28 06:12:58,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-01-28 06:12:58,484 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-01-28 06:12:58,484 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 109 flow [2023-01-28 06:12:58,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:12:58,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:12:58,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 06:12:58,486 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:12:58,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:12:58,486 INFO L85 PathProgramCache]: Analyzing trace with hash -824947493, now seen corresponding path program 1 times [2023-01-28 06:12:58,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:12:58,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675089406] [2023-01-28 06:12:58,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:12:58,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:12:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:12:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:58,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:12:58,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675089406] [2023-01-28 06:12:58,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675089406] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:12:58,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:12:58,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:12:58,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122907019] [2023-01-28 06:12:58,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:12:58,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:12:58,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:12:58,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:12:58,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:12:58,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 402 [2023-01-28 06:12:58,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:12:58,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 402 [2023-01-28 06:12:58,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:12:58,691 INFO L130 PetriNetUnfolder]: 187/394 cut-off events. [2023-01-28 06:12:58,691 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-01-28 06:12:58,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 394 events. 187/394 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1256 event pairs, 12 based on Foata normal form. 42/410 useless extension candidates. Maximal degree in co-relation 865. Up to 341 conditions per place. [2023-01-28 06:12:58,692 INFO L137 encePairwiseOnDemand]: 399/402 looper letters, 43 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-01-28 06:12:58,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 216 flow [2023-01-28 06:12:58,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:12:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:12:58,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2023-01-28 06:12:58,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207296849087893 [2023-01-28 06:12:58,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2023-01-28 06:12:58,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2023-01-28 06:12:58,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:12:58,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2023-01-28 06:12:58,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,703 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 109 flow. Second operand 3 states and 628 transitions. [2023-01-28 06:12:58,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 216 flow [2023-01-28 06:12:58,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 06:12:58,705 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 112 flow [2023-01-28 06:12:58,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-01-28 06:12:58,706 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2023-01-28 06:12:58,706 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 112 flow [2023-01-28 06:12:58,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:12:58,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:12:58,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 06:12:58,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:12:58,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:12:58,707 INFO L85 PathProgramCache]: Analyzing trace with hash 818194887, now seen corresponding path program 1 times [2023-01-28 06:12:58,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:12:58,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916580764] [2023-01-28 06:12:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:12:58,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:12:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:12:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:58,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:12:58,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916580764] [2023-01-28 06:12:58,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916580764] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:12:58,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217455861] [2023-01-28 06:12:58,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:12:58,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:12:58,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:12:58,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:12:58,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 06:12:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:12:58,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 06:12:58,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:12:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:58,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:12:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:58,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217455861] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:12:58,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:12:58,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-01-28 06:12:58,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947932849] [2023-01-28 06:12:58,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:12:58,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 06:12:58,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:12:58,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 06:12:58,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 06:12:58,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-28 06:12:58,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 203.57142857142858) internal successors, (1425), 7 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:58,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:12:58,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-28 06:12:58,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:12:59,124 INFO L130 PetriNetUnfolder]: 246/531 cut-off events. [2023-01-28 06:12:59,125 INFO L131 PetriNetUnfolder]: For 36/38 co-relation queries the response was YES. [2023-01-28 06:12:59,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 531 events. 246/531 cut-off events. For 36/38 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1513 event pairs, 100 based on Foata normal form. 12/507 useless extension candidates. Maximal degree in co-relation 1194. Up to 238 conditions per place. [2023-01-28 06:12:59,127 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 70 selfloop transitions, 10 changer transitions 1/84 dead transitions. [2023-01-28 06:12:59,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 84 transitions, 370 flow [2023-01-28 06:12:59,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:12:59,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:12:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1271 transitions. [2023-01-28 06:12:59,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269485903814262 [2023-01-28 06:12:59,130 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1271 transitions. [2023-01-28 06:12:59,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1271 transitions. [2023-01-28 06:12:59,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:12:59,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1271 transitions. [2023-01-28 06:12:59,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.83333333333334) internal successors, (1271), 6 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:59,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:59,137 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:59,137 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 112 flow. Second operand 6 states and 1271 transitions. [2023-01-28 06:12:59,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 84 transitions, 370 flow [2023-01-28 06:12:59,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 06:12:59,139 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 170 flow [2023-01-28 06:12:59,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2023-01-28 06:12:59,140 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2023-01-28 06:12:59,140 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 170 flow [2023-01-28 06:12:59,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 203.57142857142858) internal successors, (1425), 7 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:59,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:12:59,141 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:12:59,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 06:12:59,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:12:59,347 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:12:59,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:12:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1030938622, now seen corresponding path program 2 times [2023-01-28 06:12:59,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:12:59,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100180479] [2023-01-28 06:12:59,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:12:59,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:12:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:12:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:59,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:12:59,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100180479] [2023-01-28 06:12:59,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100180479] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:12:59,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090229348] [2023-01-28 06:12:59,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 06:12:59,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:12:59,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:12:59,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:12:59,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 06:12:59,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 06:12:59,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:12:59,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 06:12:59,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:12:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:59,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:12:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:12:59,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090229348] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:12:59,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:12:59,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-01-28 06:12:59,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125415599] [2023-01-28 06:12:59,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:12:59,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 06:12:59,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:12:59,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 06:12:59,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-01-28 06:12:59,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-28 06:12:59,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 170 flow. Second operand has 13 states, 13 states have (on average 203.84615384615384) internal successors, (2650), 13 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:12:59,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:12:59,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-28 06:12:59,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:13:00,040 INFO L130 PetriNetUnfolder]: 423/934 cut-off events. [2023-01-28 06:13:00,040 INFO L131 PetriNetUnfolder]: For 328/328 co-relation queries the response was YES. [2023-01-28 06:13:00,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 934 events. 423/934 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2534 event pairs, 91 based on Foata normal form. 24/900 useless extension candidates. Maximal degree in co-relation 2357. Up to 217 conditions per place. [2023-01-28 06:13:00,043 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 136 selfloop transitions, 22 changer transitions 0/161 dead transitions. [2023-01-28 06:13:00,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 161 transitions, 836 flow [2023-01-28 06:13:00,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 06:13:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 06:13:00,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2540 transitions. [2023-01-28 06:13:00,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265339966832504 [2023-01-28 06:13:00,048 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2540 transitions. [2023-01-28 06:13:00,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2540 transitions. [2023-01-28 06:13:00,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:13:00,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2540 transitions. [2023-01-28 06:13:00,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 211.66666666666666) internal successors, (2540), 12 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:00,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:00,081 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:00,081 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 170 flow. Second operand 12 states and 2540 transitions. [2023-01-28 06:13:00,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 161 transitions, 836 flow [2023-01-28 06:13:00,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 161 transitions, 797 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-01-28 06:13:00,085 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 320 flow [2023-01-28 06:13:00,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=320, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-01-28 06:13:00,086 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2023-01-28 06:13:00,086 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 320 flow [2023-01-28 06:13:00,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 203.84615384615384) internal successors, (2650), 13 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:00,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:13:00,087 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:13:00,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 06:13:00,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-28 06:13:00,293 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:13:00,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:13:00,293 INFO L85 PathProgramCache]: Analyzing trace with hash -122187422, now seen corresponding path program 3 times [2023-01-28 06:13:00,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:13:00,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237290964] [2023-01-28 06:13:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:13:00,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:13:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:13:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:13:00,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:13:00,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237290964] [2023-01-28 06:13:00,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237290964] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:13:00,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519517711] [2023-01-28 06:13:00,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 06:13:00,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:13:00,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:13:00,615 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:13:00,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 06:13:01,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-28 06:13:01,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:13:01,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-28 06:13:01,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:13:01,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-01-28 06:13:01,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:13:01,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 06:13:01,423 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:13:01,431 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-28 06:13:01,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-28 06:13:01,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:13:01,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-28 06:13:01,472 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-01-28 06:13:01,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:13:01,631 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:13:01,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 42 [2023-01-28 06:13:01,640 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:13:01,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 77 [2023-01-28 06:13:01,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2023-01-28 06:13:01,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-01-28 06:13:01,699 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:13:01,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 46 [2023-01-28 06:13:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-01-28 06:13:01,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519517711] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:13:01,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:13:01,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 25 [2023-01-28 06:13:01,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885581219] [2023-01-28 06:13:01,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:13:01,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 06:13:01,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:13:01,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 06:13:01,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=476, Unknown=5, NotChecked=0, Total=600 [2023-01-28 06:13:01,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 402 [2023-01-28 06:13:01,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 320 flow. Second operand has 25 states, 25 states have (on average 156.6) internal successors, (3915), 25 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:01,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:13:01,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 402 [2023-01-28 06:13:01,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:13:03,207 INFO L130 PetriNetUnfolder]: 821/1800 cut-off events. [2023-01-28 06:13:03,207 INFO L131 PetriNetUnfolder]: For 1316/1316 co-relation queries the response was YES. [2023-01-28 06:13:03,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4861 conditions, 1800 events. 821/1800 cut-off events. For 1316/1316 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6406 event pairs, 57 based on Foata normal form. 8/1737 useless extension candidates. Maximal degree in co-relation 4844. Up to 285 conditions per place. [2023-01-28 06:13:03,214 INFO L137 encePairwiseOnDemand]: 390/402 looper letters, 267 selfloop transitions, 110 changer transitions 1/380 dead transitions. [2023-01-28 06:13:03,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 380 transitions, 2040 flow [2023-01-28 06:13:03,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-01-28 06:13:03,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-01-28 06:13:03,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6885 transitions. [2023-01-28 06:13:03,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3982992016660882 [2023-01-28 06:13:03,226 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6885 transitions. [2023-01-28 06:13:03,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6885 transitions. [2023-01-28 06:13:03,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:13:03,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6885 transitions. [2023-01-28 06:13:03,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 160.11627906976744) internal successors, (6885), 43 states have internal predecessors, (6885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:03,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 402.0) internal successors, (17688), 44 states have internal predecessors, (17688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:03,254 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 402.0) internal successors, (17688), 44 states have internal predecessors, (17688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:03,255 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 320 flow. Second operand 43 states and 6885 transitions. [2023-01-28 06:13:03,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 380 transitions, 2040 flow [2023-01-28 06:13:03,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 380 transitions, 2025 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 06:13:03,263 INFO L231 Difference]: Finished difference. Result has 134 places, 163 transitions, 1172 flow [2023-01-28 06:13:03,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1172, PETRI_PLACES=134, PETRI_TRANSITIONS=163} [2023-01-28 06:13:03,263 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 87 predicate places. [2023-01-28 06:13:03,263 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 163 transitions, 1172 flow [2023-01-28 06:13:03,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 156.6) internal successors, (3915), 25 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:03,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:13:03,265 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:13:03,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 06:13:03,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:13:03,473 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:13:03,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:13:03,474 INFO L85 PathProgramCache]: Analyzing trace with hash -161773555, now seen corresponding path program 1 times [2023-01-28 06:13:03,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:13:03,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784847753] [2023-01-28 06:13:03,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:13:03,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:13:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:13:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:13:03,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:13:03,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784847753] [2023-01-28 06:13:03,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784847753] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:13:03,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764944956] [2023-01-28 06:13:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:13:03,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:13:03,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:13:03,859 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:13:03,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 06:13:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:13:04,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 06:13:04,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:13:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:13:04,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:13:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:13:04,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764944956] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:13:04,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:13:04,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2023-01-28 06:13:04,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925921912] [2023-01-28 06:13:04,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:13:04,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 06:13:04,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:13:04,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 06:13:04,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-01-28 06:13:04,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-28 06:13:04,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 163 transitions, 1172 flow. Second operand has 27 states, 27 states have (on average 204.25925925925927) internal successors, (5515), 27 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:04,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:13:04,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-28 06:13:04,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:13:05,273 INFO L130 PetriNetUnfolder]: 1371/3210 cut-off events. [2023-01-28 06:13:05,273 INFO L131 PetriNetUnfolder]: For 28289/28289 co-relation queries the response was YES. [2023-01-28 06:13:05,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14004 conditions, 3210 events. 1371/3210 cut-off events. For 28289/28289 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 11582 event pairs, 136 based on Foata normal form. 104/3290 useless extension candidates. Maximal degree in co-relation 13961. Up to 452 conditions per place. [2023-01-28 06:13:05,301 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 413 selfloop transitions, 75 changer transitions 0/491 dead transitions. [2023-01-28 06:13:05,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 491 transitions, 5503 flow [2023-01-28 06:13:05,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 06:13:05,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 06:13:05,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5501 transitions. [2023-01-28 06:13:05,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263107539226942 [2023-01-28 06:13:05,315 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5501 transitions. [2023-01-28 06:13:05,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5501 transitions. [2023-01-28 06:13:05,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:13:05,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5501 transitions. [2023-01-28 06:13:05,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 211.57692307692307) internal successors, (5501), 26 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:05,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 402.0) internal successors, (10854), 27 states have internal predecessors, (10854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:05,342 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 402.0) internal successors, (10854), 27 states have internal predecessors, (10854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:05,342 INFO L175 Difference]: Start difference. First operand has 134 places, 163 transitions, 1172 flow. Second operand 26 states and 5501 transitions. [2023-01-28 06:13:05,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 491 transitions, 5503 flow [2023-01-28 06:13:05,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 491 transitions, 5316 flow, removed 14 selfloop flow, removed 11 redundant places. [2023-01-28 06:13:05,390 INFO L231 Difference]: Finished difference. Result has 162 places, 201 transitions, 1742 flow [2023-01-28 06:13:05,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1742, PETRI_PLACES=162, PETRI_TRANSITIONS=201} [2023-01-28 06:13:05,391 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 115 predicate places. [2023-01-28 06:13:05,391 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 201 transitions, 1742 flow [2023-01-28 06:13:05,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 204.25925925925927) internal successors, (5515), 27 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:05,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:13:05,392 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 24, 24, 24, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:13:05,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 06:13:05,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:13:05,598 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:13:05,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:13:05,598 INFO L85 PathProgramCache]: Analyzing trace with hash -346057744, now seen corresponding path program 2 times [2023-01-28 06:13:05,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:13:05,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347334308] [2023-01-28 06:13:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:13:05,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:13:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:13:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:13:06,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:13:06,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347334308] [2023-01-28 06:13:06,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347334308] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:13:06,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418725738] [2023-01-28 06:13:06,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 06:13:06,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:13:06,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:13:06,551 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:13:06,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 06:13:06,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 06:13:06,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:13:06,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-28 06:13:06,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:13:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:13:07,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:13:07,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:13:07,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418725738] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:13:07,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:13:07,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2023-01-28 06:13:07,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557055872] [2023-01-28 06:13:07,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:13:07,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-01-28 06:13:07,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:13:07,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-01-28 06:13:07,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2023-01-28 06:13:07,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-28 06:13:07,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 201 transitions, 1742 flow. Second operand has 53 states, 53 states have (on average 204.41509433962264) internal successors, (10834), 53 states have internal predecessors, (10834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:07,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:13:07,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-28 06:13:07,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:13:10,210 INFO L130 PetriNetUnfolder]: 2697/6382 cut-off events. [2023-01-28 06:13:10,210 INFO L131 PetriNetUnfolder]: For 100006/100006 co-relation queries the response was YES. [2023-01-28 06:13:10,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29607 conditions, 6382 events. 2697/6382 cut-off events. For 100006/100006 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 23230 event pairs, 136 based on Foata normal form. 208/6566 useless extension candidates. Maximal degree in co-relation 29551. Up to 1128 conditions per place. [2023-01-28 06:13:10,248 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 829 selfloop transitions, 153 changer transitions 0/985 dead transitions. [2023-01-28 06:13:10,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 985 transitions, 11795 flow [2023-01-28 06:13:10,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-01-28 06:13:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-01-28 06:13:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 11000 transitions. [2023-01-28 06:13:10,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262150784538844 [2023-01-28 06:13:10,256 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 11000 transitions. [2023-01-28 06:13:10,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 11000 transitions. [2023-01-28 06:13:10,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:13:10,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 11000 transitions. [2023-01-28 06:13:10,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 211.53846153846155) internal successors, (11000), 52 states have internal predecessors, (11000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:10,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 402.0) internal successors, (21306), 53 states have internal predecessors, (21306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:10,289 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 402.0) internal successors, (21306), 53 states have internal predecessors, (21306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:10,289 INFO L175 Difference]: Start difference. First operand has 162 places, 201 transitions, 1742 flow. Second operand 52 states and 11000 transitions. [2023-01-28 06:13:10,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 985 transitions, 11795 flow [2023-01-28 06:13:10,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 985 transitions, 11732 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-01-28 06:13:10,397 INFO L231 Difference]: Finished difference. Result has 229 places, 281 transitions, 3410 flow [2023-01-28 06:13:10,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3410, PETRI_PLACES=229, PETRI_TRANSITIONS=281} [2023-01-28 06:13:10,398 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 182 predicate places. [2023-01-28 06:13:10,398 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 281 transitions, 3410 flow [2023-01-28 06:13:10,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 204.41509433962264) internal successors, (10834), 53 states have internal predecessors, (10834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:10,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:13:10,400 INFO L208 CegarLoopForPetriNet]: trace histogram [50, 50, 50, 50, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:13:10,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 06:13:10,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:13:10,607 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:13:10,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:13:10,608 INFO L85 PathProgramCache]: Analyzing trace with hash 890330880, now seen corresponding path program 3 times [2023-01-28 06:13:10,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:13:10,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386488016] [2023-01-28 06:13:10,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:13:10,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:13:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:13:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 0 proven. 7675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:13:13,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:13:13,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386488016] [2023-01-28 06:13:13,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386488016] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:13:13,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743954883] [2023-01-28 06:13:13,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 06:13:13,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:13:13,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:13:13,692 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:13:13,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 06:13:14,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-01-28 06:13:14,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:13:14,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 70 conjunts are in the unsatisfiable core [2023-01-28 06:13:14,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:13:16,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 06:13:16,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:13:16,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 06:13:16,380 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-01-28 06:13:16,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2023-01-28 06:13:16,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-01-28 06:13:16,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-01-28 06:13:16,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:13:16,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 06:13:16,626 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-01-28 06:13:16,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2023-01-28 06:13:16,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-01-28 06:13:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 644 proven. 245 refuted. 0 times theorem prover too weak. 6786 trivial. 0 not checked. [2023-01-28 06:13:16,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:13:16,971 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2173 (Array Int Int))) (not (= 400 (let ((.cse1 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604) (+ |c_t1Thread1of1ForFork0_enqueue_#t~mem40#1| 1))) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) v_ArrVal_2175)) .cse1))))) is different from false [2023-01-28 06:13:16,978 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2173 (Array Int Int))) (not (= 400 (let ((.cse1 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse3 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (store .cse2 .cse3 (+ (select .cse2 .cse3) 1)))) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) v_ArrVal_2175)) .cse1))))) is different from false [2023-01-28 06:13:17,106 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse3 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (let ((.cse4 (select .cse2 .cse3))) (or (forall ((v_ArrVal_2175 Int) (v_ArrVal_2169 Int) (v_ArrVal_2173 (Array Int Int))) (not (= 400 (let ((.cse1 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse2 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2169) .cse3 (+ .cse4 1))) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* (select .cse0 .cse1) 4)) v_ArrVal_2175)) .cse1))))) (= 400 .cse4)))) is different from false [2023-01-28 06:13:17,130 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2167 Int) (v_ArrVal_2169 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse2 (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ (* |c_t1Thread1of1ForFork0_enqueue_#t~mem36#1| 4) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2167)) (.cse3 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (let ((.cse4 (select .cse2 .cse3))) (or (not (= (let ((.cse1 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse2 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2169) .cse3 (+ .cse4 1))) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* (select .cse0 .cse1) 4)) v_ArrVal_2175)) .cse1)) 400)) (= .cse4 400))))) is different from false [2023-01-28 06:13:17,500 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:13:17,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 163 [2023-01-28 06:13:17,508 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:13:17,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 262 treesize of output 258 [2023-01-28 06:13:17,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 85 [2023-01-28 06:13:17,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2023-01-28 06:13:17,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-01-28 06:13:17,551 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:13:17,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 107 [2023-01-28 06:13:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 356 proven. 338 refuted. 0 times theorem prover too weak. 6786 trivial. 195 not checked. [2023-01-28 06:13:18,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743954883] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:13:18,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:13:18,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 11, 14] total 76 [2023-01-28 06:13:18,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420024573] [2023-01-28 06:13:18,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:13:18,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-01-28 06:13:18,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:13:18,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-01-28 06:13:18,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1499, Invalid=3609, Unknown=20, NotChecked=572, Total=5700 [2023-01-28 06:13:18,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 402 [2023-01-28 06:13:18,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 281 transitions, 3410 flow. Second operand has 76 states, 76 states have (on average 155.18421052631578) internal successors, (11794), 76 states have internal predecessors, (11794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:13:18,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:13:18,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 402 [2023-01-28 06:13:18,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:14:43,494 INFO L130 PetriNetUnfolder]: 5887/13489 cut-off events. [2023-01-28 06:14:43,494 INFO L131 PetriNetUnfolder]: For 195853/195853 co-relation queries the response was YES. [2023-01-28 06:14:43,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68092 conditions, 13489 events. 5887/13489 cut-off events. For 195853/195853 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 63435 event pairs, 213 based on Foata normal form. 408/13861 useless extension candidates. Maximal degree in co-relation 68009. Up to 2163 conditions per place. [2023-01-28 06:14:43,616 INFO L137 encePairwiseOnDemand]: 386/402 looper letters, 2010 selfloop transitions, 1717 changer transitions 1/3730 dead transitions. [2023-01-28 06:14:43,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 801 places, 3730 transitions, 36319 flow [2023-01-28 06:14:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 573 states. [2023-01-28 06:14:43,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2023-01-28 06:14:43,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 89210 transitions. [2023-01-28 06:14:43,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38728695093468085 [2023-01-28 06:14:43,682 INFO L72 ComplementDD]: Start complementDD. Operand 573 states and 89210 transitions. [2023-01-28 06:14:43,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 573 states and 89210 transitions. [2023-01-28 06:14:43,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:14:43,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 573 states and 89210 transitions. [2023-01-28 06:14:43,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 574 states, 573 states have (on average 155.68935427574172) internal successors, (89210), 573 states have internal predecessors, (89210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:14:44,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 574 states, 574 states have (on average 402.0) internal successors, (230748), 574 states have internal predecessors, (230748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:14:44,137 INFO L81 ComplementDD]: Finished complementDD. Result has 574 states, 574 states have (on average 402.0) internal successors, (230748), 574 states have internal predecessors, (230748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:14:44,137 INFO L175 Difference]: Start difference. First operand has 229 places, 281 transitions, 3410 flow. Second operand 573 states and 89210 transitions. [2023-01-28 06:14:44,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 801 places, 3730 transitions, 36319 flow [2023-01-28 06:14:44,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 778 places, 3730 transitions, 36100 flow, removed 0 selfloop flow, removed 23 redundant places. [2023-01-28 06:14:44,606 INFO L231 Difference]: Finished difference. Result has 984 places, 1957 transitions, 30293 flow [2023-01-28 06:14:44,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=3242, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=573, PETRI_FLOW=30293, PETRI_PLACES=984, PETRI_TRANSITIONS=1957} [2023-01-28 06:14:44,607 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 937 predicate places. [2023-01-28 06:14:44,607 INFO L495 AbstractCegarLoop]: Abstraction has has 984 places, 1957 transitions, 30293 flow [2023-01-28 06:14:44,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 155.18421052631578) internal successors, (11794), 76 states have internal predecessors, (11794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:14:44,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:14:44,609 INFO L208 CegarLoopForPetriNet]: trace histogram [51, 51, 51, 51, 38, 38, 38, 38, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:14:44,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-28 06:14:44,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:14:44,817 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:14:44,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:14:44,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1940408699, now seen corresponding path program 4 times [2023-01-28 06:14:44,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:14:44,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372280472] [2023-01-28 06:14:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:14:44,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:14:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:14:47,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:47,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:14:47,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372280472] [2023-01-28 06:14:47,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372280472] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:14:47,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094720553] [2023-01-28 06:14:47,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 06:14:47,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:14:47,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:14:47,466 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:14:47,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 06:16:42,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 06:16:42,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:16:42,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 53 conjunts are in the unsatisfiable core [2023-01-28 06:16:42,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:16:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:16:42,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:16:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:16:44,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094720553] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:16:44,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:16:44,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2023-01-28 06:16:44,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620689748] [2023-01-28 06:16:44,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:16:44,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-01-28 06:16:44,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:16:44,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-01-28 06:16:44,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2023-01-28 06:16:44,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-28 06:16:44,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 984 places, 1957 transitions, 30293 flow. Second operand has 107 states, 107 states have (on average 204.69158878504672) internal successors, (21902), 107 states have internal predecessors, (21902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:16:44,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:16:44,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-28 06:16:44,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:17:23,074 INFO L130 PetriNetUnfolder]: 10502/25712 cut-off events. [2023-01-28 06:17:23,075 INFO L131 PetriNetUnfolder]: For 17220265/17220265 co-relation queries the response was YES. [2023-01-28 06:17:23,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669987 conditions, 25712 events. 10502/25712 cut-off events. For 17220265/17220265 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 125398 event pairs, 395 based on Foata normal form. 848/26524 useless extension candidates. Maximal degree in co-relation 669697. Up to 7141 conditions per place. [2023-01-28 06:17:23,760 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 3933 selfloop transitions, 522 changer transitions 0/4458 dead transitions. [2023-01-28 06:17:23,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1089 places, 4458 transitions, 124707 flow [2023-01-28 06:17:23,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-01-28 06:17:23,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2023-01-28 06:17:23,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 22421 transitions. [2023-01-28 06:17:23,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261663381207171 [2023-01-28 06:17:23,771 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 22421 transitions. [2023-01-28 06:17:23,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 22421 transitions. [2023-01-28 06:17:23,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:17:23,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 22421 transitions. [2023-01-28 06:17:23,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 211.5188679245283) internal successors, (22421), 106 states have internal predecessors, (22421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:17:23,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 402.0) internal successors, (43014), 107 states have internal predecessors, (43014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:17:23,815 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 402.0) internal successors, (43014), 107 states have internal predecessors, (43014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:17:23,815 INFO L175 Difference]: Start difference. First operand has 984 places, 1957 transitions, 30293 flow. Second operand 106 states and 22421 transitions. [2023-01-28 06:17:23,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1089 places, 4458 transitions, 124707 flow [2023-01-28 06:17:38,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 986 places, 4458 transitions, 93648 flow, removed 12901 selfloop flow, removed 103 redundant places. [2023-01-28 06:17:38,994 INFO L231 Difference]: Finished difference. Result has 1040 places, 2221 transitions, 20436 flow [2023-01-28 06:17:38,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=14501, PETRI_DIFFERENCE_MINUEND_PLACES=881, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=20436, PETRI_PLACES=1040, PETRI_TRANSITIONS=2221} [2023-01-28 06:17:38,996 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 993 predicate places. [2023-01-28 06:17:38,996 INFO L495 AbstractCegarLoop]: Abstraction has has 1040 places, 2221 transitions, 20436 flow [2023-01-28 06:17:38,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 204.69158878504672) internal successors, (21902), 107 states have internal predecessors, (21902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:17:38,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:17:38,998 INFO L208 CegarLoopForPetriNet]: trace histogram [104, 104, 104, 104, 77, 77, 77, 77, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:17:39,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-28 06:17:39,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:17:39,213 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:17:39,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:17:39,213 INFO L85 PathProgramCache]: Analyzing trace with hash 116668732, now seen corresponding path program 5 times [2023-01-28 06:17:39,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:17:39,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985014000] [2023-01-28 06:17:39,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:17:39,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:17:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:17:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 36364 backedges. 0 proven. 36364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:17:48,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:17:48,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985014000] [2023-01-28 06:17:48,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985014000] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:17:48,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667509988] [2023-01-28 06:17:48,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 06:17:48,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:17:48,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:17:48,782 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:17:48,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 06:17:51,112 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-01-28 06:17:51,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:17:51,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 195 conjunts are in the unsatisfiable core [2023-01-28 06:17:51,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:17:51,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-01-28 06:17:51,278 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-28 06:17:51,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 38 [2023-01-28 06:17:51,520 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:17:51,530 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-01-28 06:17:51,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2023-01-28 06:17:51,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:17:51,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2023-01-28 06:17:51,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 40 [2023-01-28 06:17:51,842 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-28 06:17:51,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 63 [2023-01-28 06:17:52,020 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:17:52,030 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-01-28 06:17:52,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 58 [2023-01-28 06:17:52,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:17:52,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2023-01-28 06:17:52,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 44 [2023-01-28 06:17:52,485 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-28 06:17:52,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 67 [2023-01-28 06:17:52,681 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:17:52,690 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-01-28 06:17:52,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 58 [2023-01-28 06:17:52,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:17:52,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2023-01-28 06:17:52,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 44 [2023-01-28 06:17:53,093 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-28 06:17:53,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 67 [2023-01-28 06:17:53,302 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:17:53,313 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-01-28 06:17:53,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 58 [2023-01-28 06:17:53,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:17:53,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2023-01-28 06:17:53,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-01-28 06:17:53,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:17:53,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-01-28 06:17:53,768 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:17:53,774 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-28 06:17:53,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-28 06:17:53,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:17:53,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-28 06:17:54,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-01-28 06:17:54,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:17:54,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-01-28 06:17:54,276 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:17:54,283 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-28 06:17:54,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-28 06:17:54,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:17:54,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-28 06:17:54,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-01-28 06:17:54,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:17:54,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-01-28 06:17:54,684 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:17:54,688 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-28 06:17:54,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-28 06:17:54,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:17:54,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-28 06:17:54,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-01-28 06:17:54,961 INFO L321 Elim1Store]: treesize reduction 25, result has 26.5 percent of original size [2023-01-28 06:17:54,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2023-01-28 06:17:55,087 INFO L321 Elim1Store]: treesize reduction 53, result has 19.7 percent of original size [2023-01-28 06:17:55,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 30 [2023-01-28 06:17:55,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-28 06:17:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 36364 backedges. 12034 proven. 119 refuted. 0 times theorem prover too weak. 24211 trivial. 0 not checked. [2023-01-28 06:17:55,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:18:39,790 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4859 Int) (v_ArrVal_4866 Int) (v_ArrVal_4856 Int) (v_ArrVal_4864 Int) (v_ArrVal_4854 Int) (v_ArrVal_4863 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| Int) (v_ArrVal_4861 Int) (|v_t1Thread1of1ForFork0_~i~0#1_395| Int)) (let ((.cse5 (let ((.cse6 (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604) v_ArrVal_4854)))) (store .cse6 |c_~#stored_elements~0.base| (store (select .cse6 |c_~#stored_elements~0.base|) (+ |c_~#stored_elements~0.offset| (* |c_t1Thread1of1ForFork0_~i~0#1| 4)) v_ArrVal_4856))))) (let ((.cse0 (select .cse5 |c_~#queue~0.base|))) (let ((.cse2 (store .cse0 (+ |c_~#queue~0.offset| (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| 4)) v_ArrVal_4859)) (.cse1 (+ |c_~#queue~0.offset| 1604))) (or (< |v_t1Thread1of1ForFork0_~i~0#1_395| (+ |c_t1Thread1of1ForFork0_~i~0#1| 1)) (< (select .cse0 .cse1) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502|) (< (+ (select .cse2 .cse1) 1) v_ArrVal_4863) (< (+ |c_t1Thread1of1ForFork0_enqueue_#t~mem40#1| 1) v_ArrVal_4854) (< (select (let ((.cse3 (select (let ((.cse4 (store .cse5 |c_~#queue~0.base| (store (store .cse2 (+ 1608 |c_~#queue~0.offset|) v_ArrVal_4861) .cse1 v_ArrVal_4863)))) (store .cse4 |c_~#stored_elements~0.base| (store (select .cse4 |c_~#stored_elements~0.base|) (+ (* |v_t1Thread1of1ForFork0_~i~0#1_395| 4) |c_~#stored_elements~0.offset|) v_ArrVal_4864))) |c_~#queue~0.base|))) (store .cse3 (+ (* (select .cse3 .cse1) 4) |c_~#queue~0.offset|) v_ArrVal_4866)) .cse1) 400)))))) is different from false Received shutdown request... [2023-01-28 06:27:05,286 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 06:27:05,300 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 06:27:06,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 06:27:06,501 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-01-28 06:27:06,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 [2023-01-28 06:27:06,522 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 06:27:06,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 06:27:06,522 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-01-28 06:27:06,523 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-01-28 06:27:06,523 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 06:27:06,523 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 06:27:06,523 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-01-28 06:27:06,523 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 1, 1, 1, 1] [2023-01-28 06:27:06,526 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 06:27:06,526 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 06:27:06,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 06:27:06 BasicIcfg [2023-01-28 06:27:06,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 06:27:06,528 INFO L158 Benchmark]: Toolchain (without parser) took 856419.31ms. Allocated memory was 354.4MB in the beginning and 6.6GB in the end (delta: 6.3GB). Free memory was 290.7MB in the beginning and 2.8GB in the end (delta: -2.5GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. [2023-01-28 06:27:06,528 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 354.4MB. Free memory is still 302.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:27:06,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 499.32ms. Allocated memory was 354.4MB in the beginning and 580.9MB in the end (delta: 226.5MB). Free memory was 290.7MB in the beginning and 534.1MB in the end (delta: -243.4MB). Peak memory consumption was 25.1MB. Max. memory is 16.0GB. [2023-01-28 06:27:06,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.78ms. Allocated memory is still 580.9MB. Free memory was 534.1MB in the beginning and 531.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:27:06,529 INFO L158 Benchmark]: Boogie Preprocessor took 59.24ms. Allocated memory is still 580.9MB. Free memory was 531.0MB in the beginning and 528.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:27:06,529 INFO L158 Benchmark]: RCFGBuilder took 545.52ms. Allocated memory is still 580.9MB. Free memory was 528.9MB in the beginning and 506.8MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-28 06:27:06,529 INFO L158 Benchmark]: TraceAbstraction took 855244.55ms. Allocated memory was 580.9MB in the beginning and 6.6GB in the end (delta: 6.1GB). Free memory was 506.8MB in the beginning and 2.8GB in the end (delta: -2.3GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. [2023-01-28 06:27:06,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 354.4MB. Free memory is still 302.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 499.32ms. Allocated memory was 354.4MB in the beginning and 580.9MB in the end (delta: 226.5MB). Free memory was 290.7MB in the beginning and 534.1MB in the end (delta: -243.4MB). Peak memory consumption was 25.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 61.78ms. Allocated memory is still 580.9MB. Free memory was 534.1MB in the beginning and 531.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 59.24ms. Allocated memory is still 580.9MB. Free memory was 531.0MB in the beginning and 528.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 545.52ms. Allocated memory is still 580.9MB. Free memory was 528.9MB in the beginning and 506.8MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 855244.55ms. Allocated memory was 580.9MB in the beginning and 6.6GB in the end (delta: 6.1GB). Free memory was 506.8MB in the beginning and 2.8GB in the end (delta: -2.3GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.1s, 199 PlacesBefore, 47 PlacesAfterwards, 205 TransitionsBefore, 47 TransitionsAfterwards, 9984 CoEnabledTransitionPairs, 7 FixpointIterations, 58 TrivialSequentialCompositions, 99 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 186 TotalNumberOfCompositions, 19772 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9519, independent: 9080, independent conditional: 0, independent unconditional: 9080, dependent: 439, dependent conditional: 0, dependent unconditional: 439, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5401, independent: 5319, independent conditional: 0, independent unconditional: 5319, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9519, independent: 3761, independent conditional: 0, independent unconditional: 3761, dependent: 357, dependent conditional: 0, dependent unconditional: 357, unknown: 5401, unknown conditional: 0, unknown unconditional: 5401] , Statistics on independence cache: Total cache size (in pairs): 268, Positive cache size: 233, Positive conditional cache size: 0, Positive unconditional cache size: 233, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1033]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - TimeoutResultAtElement [Line: 1049]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - TimeoutResultAtElement [Line: 1053]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 327 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 855.1s, OverallIterations: 12, TraceHistogramMax: 104, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 146.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12151 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12151 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 14397 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1983 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5869 IncrementalHoareTripleChecker+Invalid, 22249 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1983 mSolverCounterUnsat, 1 mSDtfsCounter, 5869 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4306 GetRequests, 2993 SyntacticMatches, 411 SemanticMatches, 902 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 338694 ImplicationChecksByTransitivity, 79.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30293occurred in iteration=10, InterpolantAutomatonStates: 829, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 116.4s SatisfiabilityAnalysisTime, 15.3s InterpolantComputationTime, 2615 NumberOfCodeBlocks, 2221 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 3867 ConstructedInterpolants, 14 QuantifiedInterpolants, 15456 SizeOfPredicates, 32 NumberOfNonLiveVariables, 6392 ConjunctsInSsa, 212 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 15133/56455 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown